Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Lisa M Keyser, CLINICALSOCIALWORK

Individual provider Clinical Social Worker · NPI 1558563486

Lisa M Keyser, CLINICALSOCIALWORK is a Clinical Social Worker in Brewer, Maine. Qualified in 2003, 23 years ago. Practices with Cornerstone Behavioral Healthcare LLC, a 29-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
23
Licensed in
ME
In the registry since
2007
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Practice location Address checks out

153 State St Unit 6
Brewer, ME 04412-1992 Not confirmed with CMS for 14 years — call before visiting
Phone: (207) 991-1848
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LC9790 (ME)

Record details

NPI number1558563486
Entity typeIndividual (Type 1)
GenderFemale
Credentials CLINICALSOCIALWORK
Sole proprietorNo
NPI enumeratedJune 4, 2007
Last updated in NPPESMay 31, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Cornerstone Behavioral Healthcare Llc — 29 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients13
Services billed 400 a service is one billed item, such as a visit, a test or a procedure
Average patient age51

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Cornerstone Behavioral Healthcare LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 29 clinicians in the practice; 12 are shown here.

Other providers in Brewer